With the need of energy becoming more and more, bio gas plants are becoming prominent due to their ability to turn waste materials into fuel for many purposes. Bio gas is formed when anaerobic digestion or fermentation takes place in organic matter like manure, sewage, municipal waste, green waste and crops. Bio gas mainly consists of methane gas and carbon dioxide and may have small amounts of hydrogen sulphide, moisture and siloxanes. Bio gas plant is a common site in many houses right now.